FIMKrypto (FIMK) is an open-source cryptocurrency and payment network forked from (and compatible with) Nxt (NXT) in July 2014. It is intended as a national cryptocurrency of Finland, with a goal of offering all Finnish citizens a regular basic income. Besides being a modern cryptocurrency platform, FIMKrypto also provides numerous useful decentralised functions, such as direct transmissions of payments from person to person, strongly encrypted private messaging, and other features. As with most cryptocurrencies, nodes running the FIMK wallet software are eligible to compete for block rewards that are distributed automatically every 30 seconds. Original announcement.

DistroWatch.com - BitKey

BitKey is a FREE, Debian-based live Linux distribution designed for Bitcoin users; it comes with specialist utilities to perform highly secure air-gapped Bitcoin transactions. It contains a swiss army knife of handy Bitcoin tools that support a wide range of usage models, including a few very secure ones which would otherwise be difficult to perform. The system boots into one of the three available modes: "cold-offline" - for creating a wallet and signing transactions; "cold-online" - for watching the wallet and preparing transactions; "hot-online" - standard usage but less secure as the private keys are known to the computer which is connected to the internet.

A person discovering Bitcoin for the first time is likely to encounter the word consensus on a regular basis. By design, Bitcoin does not have a central authority that checks and confirms the transactions performed; instead, all the confirmations are done automatically, in blocks of transactions, by the computer nodes connecting to the Bitcoin network. Once enough nodes confirm the block, consensus is reached and the transaction block confirmed. In Bitcoin, this generally takes about 10 minutes. Although some altcoins have implemented much faster confirmation times, Bitcoin developers insist that, by design, the process of reaching consensus necessarily takes time.

NavCoin (NAV) is a decentralised, open-source cryptocurrency launched in July 2014. It was rebranded several times - from Summercoin, which was a fork of Bitcoin, to Navajocoin, Navajo Coin, NAV Coin and finally NavCoin. After 100,000 proof-of-work blocks (using the X13 collection of hashing algorithms), the cryptocurrency has switched to a pure proof-of-stake (PoS) consensus, with a diminishing rate of PoS interest that started at 20% and ended at 5% per annum starting from the third year on. The project's primary focus is on creating a cryptocurrency with enhanced privacy and anonymity of transactions. Original announcement.

NAV Coin developer "aguycalled" has announced the availability of a new version of NAV Coin (NAV) Core, a software application powering the project's proof-of-stake cryptocurrency with strong transaction anonymity features. NAV Coin Core 4.2.0 introduces two soft forks labeled as "Community Fund" and "NTP Sync": "Community Fund - accumulation of coins signalled by version bit 7: reduction of the staking rewards to 4%; inclusion of an additional output in the Coinstake transaction contributing 0.25NAV to the Community Fund; consensus validation of the previous rule; uses a separate database on disk to store data about the Community Fund, increasing performance. NTP Sync - signaled by version bit number 8 of staked blocks: requires mandatory clock sync against an NTP server for every node on launch; new consensus rule where no blocks in the past can exist, and maximal drift in the future for a block is 60 seconds...." Continue to the release notes for further details. Download (SHA256): navcoin-4.2.0-x86_64-linux-gnu.tar.gz (23.1MB), navcoin-4.2.0-i686-pc-linux-gnu.tar.gz (23.6MB), navcoin-4.2.0-aarch64-linux-gnu.tar.gz (7.45MB), navcoin-4.2.0-osx.dmg (14.2MB), navcoin-4.2.0-osx64.tar.gz (18.7MB), navcoin-4.2.0-win64-setup.exe (15.6MB), navcoin-4.2.0-win64.zip (22.6MB). The source code is also available: 4.2.0.tar.gz (7.53MB).

The NAV Coin team has announced the availability of an updated build of NAV Coin (NAV) Core, a bug-fix release of the anonymous cryptocurrency project's wallet client. Users who favour the coin's SegWit softwork are encouraged to upgrade to this version: "Hi Nav Coiners, our SegWit vote period was scheduled to automatically begin signalling on 1 May 2017 00:00. The dialog to prompt to vote has appeared for everyone but it seems that due to some time-date calculation, the wallet is not yet submitting the vote to the network. We have updated the wallet to have a new start date of 29 April 2017 00:00 and with this new start date, the wallet is now submitting votes to the network. If you want to immediately start casting your SegWit votes, we apologetically ask you to download the latest wallet v4.0.2.1. We believe that the v4.0.2 wallet should start casting its vote in a few days when it ticks over to a new block period. However we still recommend updating to v4.0.2.1 to immediately participate in the vote." Here is the brief release announcement. Download (MD5): navcoin-4.0.2-x86_64-linux-gnu.tar.gz (20.1MB), navcoin-4.0.2-osx.dmg (14.1MB), navcoin-4.0.2-win64-setup.exe (15.3MB).

NAV Coin developer "SUM2dev" has announced the release of NAV Coin (NAV) 4.0.1.1, a major update of the project's proof-of-stake cryptocurrency with enhanced privacy and anonymity features. This version is forked from Bitcoin Core 0.13: "This week the development team have been focusing on optimizing the new Nav Coin Core and making sure that it is providing the network stability we need to move forward. We have recently released v4.0.1.1 which has improved network stability. If you are using any other 4.0.x or 3.x version please immediately update to the latest 4.0.1.1 version and begin staking your coins to help the network. Apart from working on the core optimization, we have also been busy chipping away at a couple other objectives. Guy has been pricing up options for us to stock pre-built and pre-configured NAV branded NavPi units in our online store." Here is the full release announcement with information about future plans and upcoming releases. Download links (MD5): navcoin-4.0.1-x86_64-linux-gnu.tar.gz (20.1MB), navcoin-4.0.1-osx.dmg (14.1MB), navcoin-4.0.1-win64-setup.exe (15.2MB).

NavCoin developer "SUM2dev" has announced the release of NavCoin 3.3, a new version of the project's proof-of-stake cryptocurrency with enhanced privacy and anonymity features. The release announcement about the new version, together with upgrade instructions, was posted on the cryptocurrency's BitcoinTalk.org thread earlier today: "NAV wallet version 3.3.0 - BIP individualized update base. Changelog: name and logo have been changed to prevent any issues; BIP individualized update base; checkpointed. Instructions: if you are using the Qt wallet just click the included BAT file once before running your Qt wallet - this will automatically create a folder named NavCoin - and copy, I repeat copy, all the files on %APPDATA%NavajoCoin including your wallet.dat to %APPDATA/NavCoin. Your %APPDATA%NavajoCoin will be untouched and available to you for backup or whatever you want to do with it later on." The NavCoin developers provide their wallet client for the Windows platform only; download it from here: NavCoin_3.3.0.exe (8.90MB), NavCoin 3.3.0 Windows Wallet.zip (8.90MB). This release renames the coin to NavCoin (from Navajo Coin) while the source code on GitHub has been forked to reflect the change.